For every 2 points in a attribute above 10 you get a +1 modifier. For every 2 points below 10 you get a -1 modifier.

Strength: (determines how strong you are)Constitution:(determines how much health you have)dexterity:(determines how flexible you are)charisma:(determines how well people like you)Intelligence:(determines how smart you are)Wisdom:(determines how much will power you have)

Language: You start at 1st level knowing one or two languages (based on your race), plus an additional number of languages equal to your starting Intelligence bonus. and everyone automatically knows Common

Hp(health points)add your Constitution to it, at lv 1 Every one starts with the classed Hit Die (Ex.Barbarian hit die is 12 so your Hp is 12+ Constitution= #Hp)

Skill points: the way skill point work is in your class(Ex:Barbarian Skill Points at 1st Level(4 + Int modifier) ×4.Skill Points at Each Additional Level4 + Int modifier.)the skill points will go into your skills. that you class is proficient in.